DiffusionImageMigrationGuide

This guide aims to help with the migration from using the mitk::DiffusionImage to using the mitk::Image. For more information take a look at bug 17928

Instead of having its own class derived from the mitk::Image diffusion images are now mitk::Images with added information in their BaseData PropertyList.

Where previously code might have read

<source lang="cpp"> //includes you might need

1. include <mitkDiffusionImage.h>

// Setting the gradient images for filters FilterType::Pointer filter = FilterType::New(); filter->SetGradientImage( dwi->GetDirections(), dwi->GetVectorImage() );

// Filling the dwi information for images mitk::DiffusionImage<short>::Pointer output = mitk::DiffusionImage<short>::New(); output->SetVectorImage(resampler->GetOutput()); output->SetDirections( dwi->GetDirections() ); output->SetReferenceBValue( dwi->GetReferenceBValue() ); output->SetMeasurementFrame( dwi->GetMeasurementFrame() ); output->InitializeFromVectorImage(); </source>

you would now use

<source lang="cpp"> //includes you might need

1. include <mitkImage.h>
2. include <mitkITKImageImport.h>
3. include <mitkImageCast.h>
4. include <mitkProperties.h>
5. include <mitkDiffusionPropertyHelper.h>

// Setting the gradient images for filters mitk::DiffusionPropertyHelper::ImageType::Pointer itkVectorImagePointer = mitk::DiffusionPropertyHelper::ImageType::New(); mitk::CastToItkImage(dwi, itkVectorImagePointer);

FilterType::Pointer filter = FilterType::New(); filter->SetGradientImage( mitk::DiffusionPropertyHelper::GetGradientContainer(dwi), itkVectorImagePointer );

// Filling the dwi information for images mitk::Image::Pointer output = mitk::GrabItkImageMemory( filter->GetOutput() ); output->SetProperty( mitk::DiffusionPropertyHelper::GRADIENTCONTAINERPROPERTYNAME.c_str(), mitk::GradientDirectionsProperty::New( mitk::DiffusionPropertyHelper::GetGradientContainer(dwi) ) ); output->SetProperty( mitk::DiffusionPropertyHelper::MEASUREMENTFRAMEPROPERTYNAME.c_str(), mitk::MeasurementFrameProperty::New( mitk::DiffusionPropertyHelper::GetMeasurementFrame(dwi) ) ); output->SetProperty( mitk::DiffusionPropertyHelper::REFERENCEBVALUEPROPERTYNAME.c_str(), mitk::FloatProperty::New( mitk::DiffusionPropertyHelper::GetReferenceBValue(dwi) ) ); mitk::DiffusionPropertyHelper propertyHelper( output); propertyHelper.InitializeImage(); </source>